Circuit-breaker.



H. W. CHENEY.

IRUIT BREAKER.

APPLIOATION IILBD 0012.22, 1906.4

Patented Aug; 3, 1909.

4 SHEETS-SHEET 1.

H. W. CHENEY.

GIRCUIT BRBAKER.

APPLIUATION FILED 00T. 22, 1906.

. 930,155. l Patented Aug-3,1909.

4 SHEETS-SHEET 2.'

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' l. @Mm/nug- H. W. CHENEY.

` CIRCUIT BREAKBR. APPLICATION FILED 001:22, 1906.

' 930,155. Patented Aug. 3, 1909.

- 4 SHEETS-SHEET 3,

Patented Aug. 3, 1909. 4 SHEETS-SHBET 4.

H. W. CHENEY.

CIRCUIT BRBAKEB.. ArPLIuATIoN FILED 90122, 190s.

w Q @Fm @www f y Mummg 'such construction that the contact members isprovided with a supporting frame or'castit .istobe understood thatmyswitch is not tion, reference is UNrTnD STATES PATENT 4onirica.

HERBERT W. CHENEYJOF NORWOOD, OHIO, ASSIGNOR 'lO ALLIS-CHALMERS COMPANY,A. CORPORATION'OF NEW JERSEY, AND THE BULLOCK ELECTRIC MANUFACTURINGCOM.-

PANY, A CORPORATION OF OHIO.

CIBCUIT-BREAKER.

vSpecification of Letters Patent.

.Patented Aug. 3, 1909.

Application led October 22, 1906. Serial N0. 339,907. 'A

To all whom t may concern:

Be it known that I, HERBERT W. CHENEY, citizen of the United States,residing at N or` wood, in the county' of Hamilton and State of Ohio,have invented certain new and,- useful Im rovements in Circuit-Breakers,of which t e following is a full, clear, and exact speciiication.

My invention relates to oil switches or circuit-breakers. y i

One of the objects of my invention isto provide a switch which iscompact, simple in constructionyand suitable for circuits of highvoltage and large amperage, f

A further object isvto provide aswitch of can be easily removed in caserepairs lare necessary.

For a better 'understanding of my invenhad to the accompanying drawingsin whic t Figure 1 is a vlongitudinal section of the switch showingtheL-same attached tol the switch-board; Fig. 2 is a similarviewr oi'the switch taken from'th'e opposite side to that shown in Fig. 1 Fig. 3is a transversefsection Fig. i is a partial bottom view showing thearrangements of the contact-s Fig. 5 is a'partial'horizontal sectionalviewof the switchA showing a portion of the switchoperating mechanism,the section being taken a )proximately along the line 55 of Fig. 1looking in the direction of the arrows; and Fig. 6 is. a horizontalsection approximately along the line 6-6 of Fig. 5.

. Referring now to the figures of th e drawing, 10 represents a switchanel, to the rear of which the switch is attacliled. Theswitch ing 11consisting of a horizontal portion 12 and downwardly extending side andendportions 13. The casting is provided `with forwardly extending lugsor brackets' 14 through which bolts 14 pass which secure'the switchtothe switch'panel. l

@I have here shown a three-,pole switch but limited ftoA aswitch of this'specific number of f poles.' `The horizontal portion of the frameorcasting is provided in thiscasefwith three pairs ofAtern1inal..openings' which are'sta'g# gered and arrangedalternateluadjacent thev opposite sides of theirairor casting. Le# catedin the terminal-openings are porcelain bushings 15 adapte-d to receiveterminal rods 16 and 16a surrounded by insulatin leeves 17 and 17a. Itwill be seen that tgre are for each pole one terminal 4rod I6 and oneterminal rod 16a located on opposite sides of lthe switch.

At 18 is shown a bar made of some insulating material such as wood,which par supports in this caser three pairs of stations. switchcontacts. 'The bar extends longltudinally of the switch at ri ht anglesto the switch panel, being secure at its ends by screws 19 toprojections or ridges 20 on the downwardly extending portions 13 of theswitch casting 11. The terminal rods 16a extend straight vdown from thebushings through the bar 18, and the terminal rods 16 are bent or curvedtowardy the terminal rods 16a and likewise ass through the bar 18.` Theopenings intlie bar 18 for the terminal rods 16 are out of alinementwith the o enings for the terminal rods 16a. tlfxris arrangement greaterleakage surface is provided between the live parts of each pole thanwould be provided if all the terminal rods were in alinement at the-bar18. Connected to 'the lower ends of terminal rods 16 are contact members21 each consisting of a contact base 22, 'a spring contact finger 23secured thereto by one or more screws 24, and a contacttip or face 25secured to the end of the lc'ontact vfinger. Connected to the lower endsof the terminalrods 16a are contact members 21a each consisting of acontact base 22, a spring contact finger 23a secured thereto by one'ormore screws 24., and acontact face or ti 25a secured to the outer endofthe contact nger. The lower ends of the'contact bases 22 and 22 extendtoward each otherand the lower faces to which the spring contact lingers23 and 23 are secured are in valinement with one another. The contactiingers 23 and 23a are of lthe same length so that the contact` tips 25and 25a are also inalinement withone another. vEach contactrod isprovided with a nut 26 located ina recess inthe top face of the suporting bar. Preferablythe upperendsof t 1e contact'bases are located inrecesses in the lower face of the bar Aand are preventedfromV turning byone or more dowel-pins 27. 4

At 28 is shown a rotaryswitch member l of the bar for drawing thecontact bases tightly against the lower" With ' 'consisting 0faspindle29 and three U-shaped and 16a.

bridging contact members 30, (see Figs. 2 and 3) which are clamped tothe spindle 29, insylation 81 being interposed between the contactmembers andthe spindle. The portion of the spindle to which the bridgingconby screws 36 passing through perforated ears" 37. Each casting 32 isalso rovided on each side with a projection 38 be owthe shaft, in whichthe upper ends of the contact rods 34 are secured. The contact rods-34are surrounded by insulating sleeves 34EL which prevent the arcs fromtraveling upward on the rods when the switch is opened.

It is seen that the rotary switch member is located at one side of allthe contact rods 16 I so mount the rotary switch member that it can beeasily removed from the switch after the tank has been removed. In thiscase the downwardly extending end portions of the casting 12 are eachprovided with a rib 39 which is preferably faced off on the side oposite'the contact rods.' Bolted to the si( e of this rib or ridge 39are the two bearings 40- and 41 for the rotary spindle. The bearing 41extends outward toward the switch-board and is provided 'beyond the tankwith a lug 42 having at its outer enda projection 42u which extends atright angles to the switch-board. A bell-crank lever 43 Y is mounted ona pin or spindle between the The bell-jl bearing 41 and projections 42,crank ever is provided with an upwardly extending arm'44 and with anarm45 which engages a weightedl lever 46 which is secured to the outer endof the spindle 29. The bell- Icrank lever is adapted .to be operatedeither manually or automatically by any suitable mechanism. Theoperating mechanism vforms no art of .the present invention and furtherescription and illustration I are thought to be unnecessary. Thus it isseen, thatto remove the rotary switch member and the parts carriedthereby, all that is necessary is to iirstremove the oil tank'and thenloosen the bolts which secure the bearing 40 and 41 to the casting.

ach pole of the switch is-separat'd from the adjacent .pole and from theends of the oil tank by vertical insulating barriers 47, and thecontacts of each pole are further separated fromfeach other by shortvertical'barriers 48. The barriers 47 are preferably secured to the uper art of the casting 12by screws 49, eac of t e barriers having a rebyLetters Patent is cesse-d portion which receives splindle 29. Thebarriers 48 are provided wit notched portions which it closely aroundthe insulating bar 18 and are preferably carried by bars or rods 50 inthe bottom of the tank so as to .f

Thereis vno danger of communication of anI arc from'one pole to anotheror leakage between the dierentparts of the samevpole. Furthermore theparticular arrangement of the poles of the switch permits a switch ofany number of poles to be attached to a narrow switch-board panel.

I do not wish to be confined to the exact ,details shown butfairnin myclaims to cover all modifications which do not involve a departure fromthe spirit and. scope oi my invention. What I claim as new and desire tosecure 1. In a switch or circuitbreaker, a frame or casting, a set ofterminal rods extending lthrough said frame or casting, an insulatingsupport, stationary contact members carried thereby and arranged in aline, a movable switch member, a contact member carried thereby andadapted to engage the said stationary contact members, said terminallrods enterin said insulating bar atA oints out of line wit each 'otherso that a ong leakage surface is provided.

2`. In a multipole switch or circuitbreaker, a frame or casting, aninsulating support, a plurality ofsets of stationar contacts carriedthereby, said contacts eing arranged in a line, a plurality of contactrods connected to said contacts, 4said rods passing through both saidinsulating support and frame or castingat points which arestaggered orout of alinement so that long leak age surfaces are provided. 3. In anoilvswitch or circuit-breaker, a frame or casting having downwardlyextending sides, movable andstationary insulating sup orts mounted insaid downwardly exten ing sides, contacts carried by said supports, thecontacts of each of said su ports being arranged in a line, -terminal ros connected to the stationary contacts and passing through both saidstationary insulating support and frame or casting at points which arestaggered out of line with one another.

4.*In combination, a switch panel, an oil switch on the rear sidethereof, said switch comprising a frame secured to the panel and.

ics

. to said drum and extending downward portions of the frame atright-angles to the having an upper horizontal portion and dmvnwardlyextendingside port-ions, an'oil rece )tac-le detachably secured to saidframe; the horizontal portion of the latter forming al cover ioiuthereceptacle, a movable switch member comprising an oscillatory drummounted in the downwardly extending side g portions of theframe'at'right-angles to the panel, one end ofthe drum extending beyondthe receptacle, a plurality of contacts secured therefrom, a stationaryswitch member comprising a bar secured to the lownwardly extending sideportions of thii frame and located below and at one side )f the drum, aplurality ol' contacts carried by said bar and extending laterallytherefrom below the drum in a position to be engaged by the contacts onthe drum, and termlnal conductors connected to the last named contactsand extending upwardly through the horizontal portion of the frame.

5. In combination, aswitch panel, an oibi switch on the rear sidethereof, said switch comprising a frame secured to -thc pu el and lhaving an upper horizontal portion and downwardlyextending sideportions, an oil rece tacle detachably secured to said frame, theiorizontal portion of the latter forming u. cover for the receptacle, amovable switch member comprising an oscillatory drum mounted in thedownwardly :extending side panel, one end of the drum extending beyondthe receptacle, a plurality of bridging con tact members carried bythedrum, each of said members comprising a pair of downwardly extendincontact arms or rods having contacts at t eir free ends, a stationaryswitch Imember comprisimr an insulating bar secured to the downwardlyextending side portions oi' the frame and located below and at one sideof thc drum, a plurality of pairs of contact members carried bysaid-bar, said members having contact fingers extending laterally, thcfree ends of said fingers having contact adapted to be engaged by thecontacts of the bridging contact members, and

terminal conductors connected to the' stai ti'onary contact members andpassing upwardly through the horizontal portionof the frame. v

6. In an oil switch, a frame, an oil tank secured to the frame, aplurality of stationary contacts supported within the tank, anoscillatory switcli member comprising a drum journaled in t. 1e frame, aplurality of bridg-- mg contact members. secured to the drum, eachbridging contact membervcom rising two parts surrounding the drum, saiparts having outwardly extendin ears, screws passing through said earsan clamping said parts to the drum, a pair of contact arms or rodssecured' to one of said parts, saidcontact arms or rods having at' theirfree ends contacts adapted tol engage the stationary contacts.

7 In a switch or circuit breaker, a frame, a plurality of terminalconductors extending through said frame adjacent opposite sides of thelatter, an insulating su portingrmember secured to said frame, saiterminal con# lductors )assing through said member at points w ich arestaggered or out of lme, so

as to provide long lea age surfaces betweenV said terminal conductors,contacts air the lower ends of said conductors having con-- tact fingersarranged in line, and an oscillatory switch member arranged at one. sideof said supportin member, said oscillatory switch member aving brid 'ngcontacts adapted to engage the'contact gers. A

8. Ina switch or circuit-breaker,a frame or casting, a plurality ofstationary contacts, terminal conductors connected thereto, anoscillatory switch member com rising 'a support journaled in said frameand aving bridging contacts adapted to enga e the stationary contacts,each of said bri ging contacts comprisingapair of members 'clampedtogether about said support and a pair of v downwardly extend'invmembers secured to one of said members c amped about the suport. p Intestimony whereof I affix my signature, in the presence of twowitnesses.

HERBERT W. CHENEY. Witnesses:

ARTHUR F. Kwis, 'FRED J. KINsEY.

